| Crypt::Digest::MD4(3) | User Contributed Perl Documentation | Crypt::Digest::MD4(3) | 
NAME¶
Crypt::Digest::MD4 - Hash function MD4 [size: 128 bits]
SYNOPSIS¶
   ### Functional interface:
   use Crypt::Digest::MD4 qw( md4 md4_hex md4_b64 md4_b64u
                                md4_file md4_file_hex md4_file_b64 md4_file_b64u );
   # calculate digest from string/buffer
   $md4_raw  = md4('data string');
   $md4_hex  = md4_hex('data string');
   $md4_b64  = md4_b64('data string');
   $md4_b64u = md4_b64u('data string');
   # calculate digest from file
   $md4_raw  = md4_file('filename.dat');
   $md4_hex  = md4_file_hex('filename.dat');
   $md4_b64  = md4_file_b64('filename.dat');
   $md4_b64u = md4_file_b64u('filename.dat');
   # calculate digest from filehandle
   $md4_raw  = md4_file(*FILEHANDLE);
   $md4_hex  = md4_file_hex(*FILEHANDLE);
   $md4_b64  = md4_file_b64(*FILEHANDLE);
   $md4_b64u = md4_file_b64u(*FILEHANDLE);
   ### OO interface:
   use Crypt::Digest::MD4;
   $d = Crypt::Digest::MD4->new;
   $d->add('any data');
   $d->addfile('filename.dat');
   $d->addfile(*FILEHANDLE);
   $result_raw  = $d->digest;     # raw bytes
   $result_hex  = $d->hexdigest;  # hexadecimal form
   $result_b64  = $d->b64digest;  # Base64 form
   $result_b64u = $d->b64udigest; # Base64 URL Safe form
DESCRIPTION¶
Provides an interface to the MD4 digest algorithm.
EXPORT¶
Nothing is exported by default.
You can export selected functions:
  use Crypt::Digest::MD4 qw(md4 md4_hex md4_b64 md4_b64u
                                      md4_file md4_file_hex md4_file_b64 md4_file_b64u);
Or all of them at once:
use Crypt::Digest::MD4 ':all';
FUNCTIONS¶
md4¶
Logically joins all arguments into a single string, and returns its MD4 digest encoded as a binary string.
 $md4_raw = md4('data string');
 #or
 $md4_raw = md4('any data', 'more data', 'even more data');
md4_hex¶
Logically joins all arguments into a single string, and returns its MD4 digest encoded as a hexadecimal string.
 $md4_hex = md4_hex('data string');
 #or
 $md4_hex = md4_hex('any data', 'more data', 'even more data');
md4_b64¶
Logically joins all arguments into a single string, and returns its MD4 digest encoded as a Base64 string, with trailing '=' padding.
 $md4_b64 = md4_b64('data string');
 #or
 $md4_b64 = md4_b64('any data', 'more data', 'even more data');
md4_b64u¶
Logically joins all arguments into a single string, and returns its MD4 digest encoded as a Base64 URL Safe string (see RFC 4648 section 5).
 $md4_b64url = md4_b64u('data string');
 #or
 $md4_b64url = md4_b64u('any data', 'more data', 'even more data');
md4_file¶
Reads file (defined by filename or filehandle) content, and returns its MD4 digest encoded as a binary string.
 $md4_raw = md4_file('filename.dat');
 #or
 $md4_raw = md4_file(*FILEHANDLE);
md4_file_hex¶
Reads file (defined by filename or filehandle) content, and returns its MD4 digest encoded as a hexadecimal string.
 $md4_hex = md4_file_hex('filename.dat');
 #or
 $md4_hex = md4_file_hex(*FILEHANDLE);
BEWARE: You have to make sure that the filehandle is in binary mode before you pass it as argument to the addfile() method.
md4_file_b64¶
Reads file (defined by filename or filehandle) content, and returns its MD4 digest encoded as a Base64 string, with trailing '=' padding.
 $md4_b64 = md4_file_b64('filename.dat');
 #or
 $md4_b64 = md4_file_b64(*FILEHANDLE);
md4_file_b64u¶
Reads file (defined by filename or filehandle) content, and returns its MD4 digest encoded as a Base64 URL Safe string (see RFC 4648 section 5).
 $md4_b64url = md4_file_b64u('filename.dat');
 #or
 $md4_b64url = md4_file_b64u(*FILEHANDLE);
METHODS¶
The OO interface provides the same set of functions as Crypt::Digest.
new¶
$d = Crypt::Digest::MD4->new();
clone¶
$d->clone();
reset¶
$d->reset();
add¶
 $d->add('any data');
 #or
 $d->add('any data', 'more data', 'even more data');
addfile¶
 $d->addfile('filename.dat');
 #or
 $d->addfile(*FILEHANDLE);
add_bits¶
 $d->add_bits($bit_string);   # e.g. $d->add_bits("111100001010");
 #or
 $d->add_bits($data, $nbits); # e.g. $d->add_bits("\xF0\xA0", 16);
hashsize¶
$d->hashsize; #or Crypt::Digest::MD4->hashsize(); #or Crypt::Digest::MD4::hashsize();
digest¶
$result_raw = $d->digest();
hexdigest¶
$result_hex = $d->hexdigest();
b64digest¶
$result_b64 = $d->b64digest();
b64udigest¶
$result_b64url = $d->b64udigest();
SEE ALSO¶
- CryptX, Crypt::Digest
 - <https://en.wikipedia.org/wiki/MD4>
 
| 2025-06-11 | perl v5.42.0 |